"disableLocalStrategy: true" still asking for email or nickname

[antonbrams]

Environment Info

    "next": "15.0.0-canary.104",
    "payload": "beta",
    "nodejs": v18.20.4

Describe the Bug

I want to create a custom auth for trainees that can login with their firstname, lastname and trainee_id. There is no need for password, email or nicknames. I've find out that disableLocalStrategy set to true is ignored and still requires email/nickname and password. If i'm doing something wrong, please tell me how to fix it?

Reproduction Steps

import type {CollectionConfig} from 'payload'

export default {
	slug: 'trainees',
	labels: {
		singular: 'Azubi',
		plural: 'Azubis',
	},
	auth: {
		disableLocalStrategy: true,
		strategies: [
			{
				identityField: 'trainee_id',
				name: 'custom-strategy',
				async authenticate({headers, payload}) {
					const {docs} = await payload.find({
						collection: 'trainees',
						where: {
							name_first: {equals: headers.get('name_first')},
							name_last: {equals: headers.get('name_last')},
							trainee_id: {equals: headers.get('trainee_id')},
						},
					})
					return {user: docs[0]}
				},
			},
		],
	},
	fields: [
		{
			name: 'name_first',
			label: 'Vorname',
			type: 'text',
			required: true,
		},
		{
			name: 'name_last',
			label: 'Nachname',
			type: 'text',
			required: true,
		},
		{
			name: 'trainee_id',
			label: 'Matrikelnummer',
			type: 'text',
			required: true,
		},
	],
} as const satisfies CollectionConfig

is called by

	const result = await payload.login({
		collection: 'trainees',
		data: {
			name_first: 'Hassan',
			name_last: 'Altay',
			trainee_id: '43523452345',
		},
	})
	console.log(result)

causes

dock-payload   |  ⨯ node_modules/payload/dist/auth/operations/login.js (56:1) @ loginOperation
dock-payload   |  ⨯ ValidationError: The following field is invalid: email
dock-payload   |     at async $$ACTION_0 (./src/app/logic/actions.ts:52:20)
dock-payload   | digest: "1954918542"
dock-payload   | Cause: {
dock-payload   |   collection: 'trainees',
dock-payload   |   errors: [ { field: 'email', message: 'This field is required.' } ]
dock-payload   | }
dock-payload   |   54 |         // cannot login with username, did not provide email
dock-payload   |   55 |         if (!canLoginWithUsername && !sanitizedEmail) {
dock-payload   | > 56 |             throw new ValidationError({
dock-payload   |      | ^
dock-payload   |   57 |                 collection: collectionConfig.slug,
dock-payload   |   58 |                 errors: [
dock-payload   |   59 |                     {